really? I have to keep making useless updates (just a version number bump) on one of the accounts i manage, because i keep receiving thread emails every 6 months that the developer account sees no activity and if i don't do anything they will remove and close.

that app is a done project and need only to be udpated when the target SDK becomes too old for the play store

Yes, unfortunately that has not been the case for me, my account is still active.

My app has already been removed when they added the Privacy Policy requirement for the Advertising ID, where I did not update the app.